baustin wrote:When the TCU stops responding, I just do a 30-second fuse pull, and then all is good for another month or two. Yes, it is an inconvenience, but not as much as it would be not having remote access to the car.

I'm averaging about 3 months between fuse pulls. Annoying, but I need remote access for preheat in winter.

WetEV#49Most everything around here is wet during the rainy season. And the rainy season is long.2012 Leaf SL Red (Totaled)2014 Leaf SL Red

baustin wrote:Your denying yourself the advantages of a functioning TCU, because of the possibility of a problem. Yes, there are those with TCU issues, but not everyone has been negatively affected. It may cost me a little time, but it has not cost me any more money that would be expected. I upgraded the TCU, when they first became available, in January 2017. I replaced the original battery (almost 5 years old) in September 2017 with an AGM battery. The need for fuse pulls has greatly decreased since then. When the TCU stops responding, I just do a 30-second fuse pull, and then all is good for another month or two. Yes, it is an inconvenience, but not as much as it would be not having remote access to the car.

Fuse pulls, dead batteries... Nope, I expect it fixed before I spend money for this.

baustin wrote:Your denying yourself the advantages of a functioning TCU, because of the possibility of a problem. Yes, there are those with TCU issues, but not everyone has been negatively affected. It may cost me a little time, but it has not cost me any more money that would be expected. I upgraded the TCU, when they first became available, in January 2017. I replaced the original battery (almost 5 years old) in September 2017 with an AGM battery. The need for fuse pulls has greatly decreased since then. When the TCU stops responding, I just do a 30-second fuse pull, and then all is good for another month or two. Yes, it is an inconvenience, but not as much as it would be not having remote access to the car.

Fuse pulls, dead batteries... Nope, I expect it fixed before I spend money for this.

That is your choice, and your decision. We all have different levels of inconvenience we are willing to accept to gain the levels of convenience that we desire.

Hopefully, Nissan is working on a fix, but I don't see a speedy resolution, or a major recall, in the near future. The upgraded TCU has been available for almost 18 months, with no positive updates from the field, or from Nissan.

I haven't had any problems with the TCU since I deleted my "saved charger locations" many months ago (no fuse pulls/12v issues/nothing). In fact, I just returned from a week-long vacation where I was able to retrieve charge status via the app. As was mentioned, there may be other/different issues with different model years (and battery types), but all relevant info about my Leaf is in my sig.

My saga with TCU upgrade on Leaf 2015 SV is over. It was caused by Data Communications settings to be set to manual and no provider selected. Setting it to auto config (AT&T), corrected the connectivity issue. No issues with 12V battery yet, but it seems to be compromised (by deep discharge) as car was parked on dealer lot for months before I got it. TCU works, but complains of poor reception at home, as it blocked by massive Expedition between Leaf and tower. I have moved Expedition into garage as it started to rust too much for my comfort when left outside, so reception got better.